<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
<script>
    var damu ={
        name:"达姆"
    }
    Object.defineProperty(damu,"wife",{
        value:"周冬雨"
    })
    Object.freeze(damu);


    damu.son ="王思聪";
    damu.name="达姆666"
    delete  damu.name
    console.log(damu)
</script>
</html>